Earnest Money vs. Due Diligence: How Deposits and Investigation Periods Actually Work

Earnest money and due diligence are two different mechanisms that work together to manage risk between LOI and close. Earnest money is a financial deposit. Due diligence is a process. Most business owners conflate them or assume the deposit makes the deal ‘final.’ It doesn’t. The deposit is just a financial commitment that may or may not be at risk depending on what happens during the diligence period.

The sequence: LOI signed → earnest money deposited → due diligence runs → Definitive Purchase Agreement negotiated → close. Earnest money usually lands in escrow within 5-10 business days of LOI signing. Due diligence then runs for 60-120 days. During that window, the buyer is investigating and the deposit is ‘at risk’ in the sense that it could be returned (if the buyer finds something) or forfeited (if the buyer walks without cause).

The deposit isn’t free money for the seller. It’s held in escrow with specific release conditions. Most LOIs allow the buyer to recover the deposit if due diligence reveals material issues, if financing falls through, or if specific contingencies aren’t met. The deposit only becomes the seller’s if the deal closes (where it’s applied to the purchase price) or if the buyer breaches without an excuse.

Sellers want hard deposits, narrow contingencies, and short DD windows. Buyers want refundable deposits, broad contingencies, and long DD windows. The LOI is where these competing interests get negotiated. The result determines who bears the cost of a failed deal — and the cost can be substantial. A seller who takes the business off the market for 90 days during DD has real opportunity cost if the deal dies.

“Earnest money is the buyer’s promise that they’re serious. Due diligence is the buyer’s right to verify. The deal documents control whether one becomes the cost of the other.”

Key Takeaways

• Earnest money is typically 1-5% of purchase price, with $25k-$250k being most common in lower-middle-market deals.
• Due diligence typically runs 60-120 days, with 75-90 days being the median for $5-50M deals.
• Earnest money is usually refundable during the DD period and non-refundable after DD ends or after specific milestones (financing commitment, board approval).
• ‘Hard’ deposits become non-refundable on a specific date regardless of DD outcome. ‘Soft’ deposits remain refundable throughout DD.
• The LOI’s contingency language — not the deposit itself — determines whether the deposit is at risk in any given scenario.
• Sellers should push for shorter DD windows, narrower contingencies, and hard deposit conversion at specific milestones to align buyer incentives.

What is earnest money in a business sale?

Earnest money is a good-faith deposit the buyer makes after signing the LOI. It signals the buyer’s seriousness about closing and gives the seller financial comfort that the buyer won’t walk frivolously. The deposit is held in escrow by a neutral third party (typically a law firm or escrow agent) under a written escrow agreement with specific release conditions.

Typical deposit size: 1-5% of purchase price. On a $5M deal, that’s $50k-$250k. On a $20M deal, $200k-$1M. Smaller deals (under $2M) sometimes have flat-dollar deposits ($25k-$50k). The deposit is meaningful enough to discourage casual walks but small enough that buyers will commit to it without extensive risk analysis.

Earnest money differs from a binding offer. An LOI is generally non-binding except for specific provisions (exclusivity, confidentiality, deposit terms). The earnest money is one of the few binding obligations in the LOI. The buyer commits to wiring the deposit; the seller commits to escrow terms. Everything else — price, structure, reps and warranties — is still being negotiated.

The deposit is applied to the purchase price at close. If the deal closes, the buyer’s deposit becomes part of the seller’s payment. The buyer doesn’t double-pay. If the deal dies, the deposit is either returned (if a permitted contingency is invoked) or forfeited to the seller (if the buyer breaches). The escrow agreement controls the release mechanics.

What is due diligence in a business sale?

Due diligence is the formal investigation period the buyer conducts after LOI signing. The buyer reviews everything material to the deal: audited and unaudited financials, tax returns, customer contracts, employee agreements, leases, insurance, litigation, IP, regulatory compliance, and operational data. The goal is to verify the seller’s representations and surface any issues that change the deal economics.

Typical DD window: 60-120 days. Smaller deals (under $5M) often run 45-60 days. Mid-market deals ($5-25M) typically 60-90 days. Larger deals ($25M+) can run 90-120 days or longer. The DD window starts when the LOI is signed and the data room opens. It ends when the Definitive Purchase Agreement is signed and the deal moves to close.

DD is broken into workstreams: financial, legal, operational, commercial, IT, environmental. Financial DD (often called Quality of Earnings or QoE) verifies revenue, EBITDA, working capital, and add-backs. Legal DD reviews contracts, IP, litigation, and corporate structure. Operational DD examines processes, systems, and key personnel. Commercial DD studies customers, competitors, and market position. Each workstream surfaces different risks.

DD findings drive deal modifications, not just walks. Most DD doesn’t kill deals — it adjusts them. A finding might trigger a price reduction (revenue can’t be verified), an indemnity (a tax issue is uncovered), a holdback (a customer is at risk), or specific reps and warranties (a regulatory question is identified). The deal still closes, just on different terms than the LOI suggested.

How earnest money and due diligence work together

Earnest money is the financial commitment. Due diligence is the verification right. The two operate in parallel during the post-LOI period. The buyer has wired the deposit (or has 5-10 days to wire it) and is using that financial commitment as leverage to demand information, access, and seller cooperation during DD. The seller has the deposit in escrow and is using it as leverage to demand timely DD progress, professional behavior, and respect for the deal timeline.

The deposit is at risk during DD — but only in specific scenarios. Most LOIs include a ‘DD contingency’ that gives the buyer the right to walk and recover the deposit if DD reveals material issues. The contingency might be defined narrowly (specific issues that meet a materiality threshold) or broadly (the buyer can walk for any reason during DD). The narrower the contingency, the more risk the buyer carries; the broader the contingency, the more risk the seller carries.

Hard deposits and soft deposits behave differently. A ‘soft’ deposit is fully refundable throughout DD — if the buyer walks for any reason during DD, the deposit comes back. A ‘hard’ deposit becomes non-refundable on a specific date (e.g., 30 days after LOI signing) regardless of DD outcome. Many deals use a hybrid: deposit starts soft, hardens at a specific milestone (DD end, financing commitment, board approval).

The deposit is not a penalty — it’s liquidated damages. If the buyer walks without cause, the seller doesn’t sue for full damages; they keep the deposit. If the seller walks without cause, they refund the deposit and may owe additional damages depending on the LOI. The deposit is the agreed-upon liquidated damages amount that simplifies dispute resolution.

Refundable vs. non-refundable: when the deposit is returned

The deposit is returned if the buyer walks for a permitted reason. Permitted reasons typically include: (1) DD reveals a material issue that wasn’t disclosed, (2) financing isn’t obtained on terms specified in the LOI, (3) regulatory approval (e.g., HSR antitrust review) isn’t granted, (4) a specific contingency listed in the LOI isn’t met, or (5) the seller breaches the LOI (e.g., signs with another buyer during exclusivity).

The deposit is forfeited if the buyer walks for an unpermitted reason. Unpermitted reasons typically include: (1) buyer’s cold feet, (2) market shift unrelated to the business, (3) buyer’s failure to perform DD diligently, (4) buyer’s failure to negotiate the DPA in good faith, or (5) buyer pulling out after the ‘hard money’ date with no contingency. In these cases, the seller keeps the full deposit.

Disputed walks: when each side claims a different reason. The most contentious scenarios involve disputes over whether a walk was permitted. The buyer claims a DD finding justified the walk; the seller claims the issue was disclosed or immaterial. The escrow agreement requires both parties’ consent (or arbitration) to release the deposit. Disputes can drag on for months and sometimes end in litigation or settlement.

Avoiding disputes: clear contingency language in the LOI. Well-drafted LOIs define what counts as a material issue (e.g., a financial discrepancy of more than X%, a previously undisclosed liability over Y dollars, a customer concentration finding above Z%). The clearer the language, the easier it is to determine whether a walk was permitted. Vague language (‘buyer’s satisfaction with DD’) effectively makes the deposit fully refundable.

Hard deposits, soft deposits, and milestone hardening

Soft deposits are fully refundable during the DD period. If the buyer invokes any permitted contingency at any time during DD, the deposit comes back. This is the most buyer-friendly structure. It’s common in early-stage negotiations, in deals where DD scope is broad, and in deals where the buyer has stronger leverage than the seller.

Hard deposits become non-refundable on a specific date. After the ‘hard money’ date, the deposit is forfeited if the buyer walks — regardless of DD findings. Some hard deposits have carve-outs (still refundable for financing failure or seller breach) but are otherwise non-refundable. This is the most seller-friendly structure. It’s common when the seller has leverage (multiple bidders, hot market, strong asset).

Milestone hardening is the common middle ground. Deposit starts soft, hardens at specific milestones during DD. Common milestones: (1) financing commitment letter received, (2) QoE report issued without material findings, (3) board or IC approval, (4) end of DD period. Each milestone reduces buyer optionality and increases seller certainty. Sellers should push for early hardening; buyers should push for late hardening.

Deposit step-ups: increasing the deposit over time. Some deals start with a small deposit (1-2%) and increase the deposit at milestones (additional 1-2% at financing commitment, additional 1-2% at DD end). Each step-up signals greater buyer commitment. Sellers like step-ups because they reduce risk over time; buyers tolerate them because the increases come after major DD risks are resolved.

What happens to the deposit if DD finds a problem?

Most DD findings don’t kill the deal — they adjust it. If DD finds a material issue, the buyer typically asks the seller to address it: reduce the price, add an indemnity, increase the holdback, or restructure the deal. The deposit stays in escrow during this renegotiation. Both parties have skin in the game and incentive to find a workable solution. The deposit isn’t at risk yet because nobody is walking.

If renegotiation fails, the buyer’s options depend on contingency language. If the LOI’s DD contingency covers the issue, the buyer can walk and recover the deposit. If the LOI’s DD contingency doesn’t cover the issue (e.g., the issue was previously disclosed), the buyer either accepts modified terms or walks and forfeits the deposit. This is where contingency language drafted at LOI signing becomes critical 60+ days later.

Minor findings rarely justify a walk. DD almost always finds something. Minor findings (small revenue corrections, immaterial contract issues, garden-variety legal questions) don’t typically meet the materiality threshold for walking. The buyer either accepts the finding, asks for a small price adjustment, or moves forward. The deposit isn’t in play unless the finding is genuinely material.

Major findings can trigger walks — or major restructuring. Major findings (significant revenue restatement, undisclosed liabilities, customer concentration risk, regulatory exposure, IP issues) can either justify a walk or force major deal restructuring. Sometimes the price drops 10-20%. Sometimes the structure shifts from stock to asset purchase. Sometimes the deal dies and the deposit is returned. Each path is a function of the LOI’s contingency language and the parties’ willingness to renegotiate.

Escrow mechanics: how the deposit is actually held

Earnest money is held by a neutral third-party escrow agent. Common escrow agents: law firms (often the seller’s or a mutually selected firm), title companies (in real-estate-heavy deals), banks with institutional escrow services, and specialized escrow agents. The escrow agent is chosen at LOI signing and named in the escrow agreement. Both buyer and seller approve the choice.

The escrow agreement governs deposit mechanics. It specifies: how the deposit is held (segregated account, interest-bearing or not), what conditions trigger release (close, mutual instruction, arbitration, court order), and how disputes are handled. Most escrow agreements require both parties’ written instruction to release the deposit. If the parties disagree, the deposit stays in escrow until resolution.

Interest on the deposit: usually goes to the buyer at close. If the deposit sits in escrow for 90+ days, it earns interest. Most escrow agreements credit interest to the buyer at close (since the deposit is applied to the purchase price). If the deposit is forfeited, interest typically follows the principal — goes to the seller. Some agreements split interest. The mechanics are usually low-stakes but worth specifying.

Disputed releases: the deposit gets stuck. If buyer and seller disagree on whether the deposit should be released to the seller (forfeiture) or returned to the buyer (refund), the escrow agent typically holds the deposit until: (1) both parties give matching written instruction, (2) an arbitrator rules, or (3) a court orders release. This can take months or longer. Both parties have incentive to negotiate a settlement rather than litigate.

Common edge cases: extensions, replacements, and busted-deal scenarios

DD extension requests are common and typically handled informally. Buyers often realize at Day 45-60 that DD will take longer than planned. Reasons: seller delays in providing information, complexity of multi-entity structures, regulatory questions that require more analysis, financing process taking longer than expected. Most extension requests are granted by sellers because the alternative is a deal walk. Sellers should require: (a) extension granted in writing, (b) specific new end date, (c) deposit terms unchanged or modified per agreement, (d) exclusivity extended for the same period.

Replacement buyers and seller flexibility. If the deal dies during DD and the seller has alternative buyers, the seller may need to re-engage with backup bidders quickly. Sellers who ran a competitive process pre-LOI typically have backup options; sellers who negotiated with one buyer often start over from scratch. The seller’s exclusivity period typically expires when the deal is formally terminated, freeing the seller to re-engage. Sophisticated sellers maintain relationships with backup bidders during the primary deal’s DD period.

Busted-deal scenarios: when both sides agree to walk. Sometimes neither side wants to close on the originally negotiated terms but neither side wants to forfeit (or refund) the deposit through a contested walk. Solution: a mutual termination agreement that returns the deposit (or splits it) and releases both parties from further obligations. This is cleanest when both sides recognize the deal economics no longer work and prefer a clean exit over a contested fight.

Litigation risk on disputed deposits. Most deposit disputes are settled or arbitrated within 6-12 months. A small percentage end up in litigation, which can take 18-36 months and cost $200-500k+ in legal fees per side. The deposit itself is often a small fraction of total litigation cost. Both parties almost always prefer settlement to extended litigation. The threat of litigation is leverage; actual litigation is rare.

How to negotiate the deposit and DD terms in the LOI

Sellers should push for: hard deposit, narrow contingencies, short DD window. Hard deposit (or early milestone hardening) puts the buyer’s money at risk and discourages frivolous walks. Narrow contingencies (specific materiality thresholds, defined permitted-walk reasons) reduce ambiguity and limit refund scenarios. Short DD windows (60-75 days for $5-15M deals) reduce the seller’s exposure to extended off-market periods.

Buyers should push for: refundable deposit, broad contingencies, long DD window. Refundable deposit during DD preserves buyer optionality. Broad contingencies (‘buyer satisfaction with DD’, ‘market conditions’) preserve walk rights. Long DD windows (90-120 days) allow thorough investigation and negotiation leverage. The buyer’s leverage to negotiate these terms depends on competitive dynamics — in a competitive process, sellers can hold firm; in a one-bidder process, buyers get more concessions.

Realistic compromise: 75-day DD, narrow contingencies, milestone hardening. Most negotiated outcomes look like this: 75-day DD window, deposit refundable for financing failure and material DD findings only, hardens to non-refundable at financing commitment (typically Day 30-45). This balance gives buyers enough time and protection to do real DD; it gives sellers reasonable certainty after key milestones.

The deposit terms are a leading indicator of buyer seriousness. Buyers who resist any deposit, refuse hardening, and demand 120-day DD windows are often signaling that they’re not fully committed. Buyers who agree to meaningful deposits, reasonable hardening milestones, and tight DD windows are signaling that they’ve already done significant pre-LOI work and are confident the deal will close. Sellers should treat deposit negotiations as a buyer-quality signal.

Conclusion

Earnest money and due diligence are the two mechanisms that bridge LOI and close. The deposit is the buyer’s skin in the game; DD is the buyer’s right to verify. Together they create a structured period where both parties carry risk and have incentive to make the deal work. The terms negotiated in the LOI — deposit size, hardening milestones, DD length, contingency language — determine who carries which risks and who keeps the deposit if the deal dies. Sellers should push for hard deposits, narrow contingencies, and short DD windows. Buyers should push for refundable deposits, broad contingencies, and long DD windows. The realistic middle ground is a 60-90 day DD window, a meaningful deposit (1-3% of price) that hardens at the financing milestone, and clearly defined materiality thresholds for permitted walks. Get those terms right at LOI signing and the deposit-vs-DD interaction takes care of itself.

Frequently Asked Questions

What is earnest money in a business sale?

Earnest money is a good-faith deposit the buyer makes after signing the LOI. It signals seriousness and gives the seller financial comfort that the buyer won’t walk frivolously. Typical size: 1-5% of purchase price, often $25k-$250k in lower-middle-market deals. Held in escrow by a neutral third party until the deal closes or terminates.

How much earnest money is typical?

1-5% of purchase price. On a $5M deal, expect $50k-$250k. On a $20M deal, $200k-$1M. Smaller deals (under $2M) sometimes use flat-dollar deposits ($25k-$50k). The percentage tends to decrease as deal size increases — a $50M deal might have a $1M deposit (2%), not a $2.5M deposit (5%).

What is due diligence in a business sale?

Due diligence is the formal investigation period the buyer conducts after the LOI is signed but before the Definitive Purchase Agreement. The buyer reviews financials, legal, operations, customer concentration, IP, and other risk factors. Typical length: 60-120 days, with 75-90 days being most common in $5-50M deals.

How long does due diligence take?

60-120 days, depending on deal size and complexity. Smaller deals (under $5M) typically run 45-60 days. Mid-market deals ($5-25M) typically run 60-90 days. Larger deals ($25M+) can run 90-120 days or longer. Complex deals (regulated industries, multiple subsidiaries, international operations) tend toward the longer end.

Is earnest money refundable during due diligence?

Usually yes, with conditions. Most LOIs allow the buyer to recover the deposit if DD reveals material issues, financing falls through, or specific contingencies aren’t met. The deposit becomes non-refundable after DD ends or after specific hardening milestones (financing commitment, board approval, etc.). The exact terms depend on the LOI contingency language.

What’s the difference between a hard deposit and a soft deposit?

A soft deposit is fully refundable throughout DD — if the buyer walks for any permitted reason, the money comes back. A hard deposit becomes non-refundable on a specific date regardless of DD outcome. Most negotiated outcomes use milestone hardening: deposit starts soft, hardens to non-refundable at the financing commitment or DD-end milestone.

When does earnest money become non-refundable?

Most LOIs make the deposit non-refundable at one of: (1) end of DD period (typically Day 60-90), (2) buyer’s receipt of financing commitment letter, (3) board or investment committee approval, (4) specific milestone date in the LOI. After the hardening milestone, the buyer forfeits the deposit if they walk — even for DD-related reasons.

What happens to earnest money if the buyer walks?

Depends on why and when. If the walk is for a permitted reason (material DD finding, financing failure, specific contingency) before hardening, the deposit is returned. If the walk is for an unpermitted reason (cold feet, market shift) or after hardening, the deposit is forfeited to the seller as liquidated damages.

What happens to earnest money if the seller walks?

The deposit is returned to the buyer. Most LOIs include exclusivity provisions: the seller can’t shop the deal during the DD period. If the seller breaches exclusivity (signs with another buyer, terminates without cause), the deposit is refunded and the seller may owe additional damages depending on the LOI’s remedy provisions.

Where is earnest money held?

In escrow with a neutral third party. Common escrow agents: law firms (often the seller’s or a mutually selected firm), title companies, banks with escrow services, and specialized escrow agents. Both buyer and seller approve the agent at LOI signing. The escrow agreement specifies release conditions and dispute mechanics.

Can the seller spend the earnest money before close?

No. The deposit is held in escrow and segregated from the seller’s operating funds. The seller can’t access the deposit until the deal closes (and the deposit is applied to purchase price) or until the buyer formally forfeits the deposit per the escrow agreement. Sellers who try to access escrowed funds early face serious legal and ethical issues.

What if buyer and seller disagree about whether the deposit should be returned?

The deposit stays in escrow until both parties give matching written instruction, an arbitrator rules, or a court orders release. Disputes can take months or longer. Both parties have incentive to negotiate a settlement rather than litigate. Clear contingency language in the LOI (specific materiality thresholds, defined permitted-walk reasons) reduces dispute risk.

About the Author

Christoph Totter is the founder of CT Acquisitions, a buy-side deal origination firm headquartered in Sheridan, Wyoming. CT Acquisitions sources founder-led businesses for 75+ private equity firms, family offices, and search funds across the U.S. lower middle market ($1M–$25M EBITDA). Christoph writes about M&A from the perspective of someone on the phone with both sides of the deal table every week. Connect on LinkedIn · Get in touch